[船] mainsail，main course ；

[例句] 主帆是用真正的厚篷帆布手工裁剪和缝纫而成的。 The mainsails are hand-cut and sewn from real sailcloth.

[例句] 主帆在风中吹动拍打,发出雷鸣般的响声. The main sail was blowing and slatting with a noise like thunder.

owner of cargo，consignor，shipper ；

[例句] 他们劫持了货主,并抢走了他的所有东西. They held up the owner and robbed him of everything.

[例句] 供应商少,然日方出价刻薄,货主报价在20美分的水准. Supplier scare japanese bid brisk but shipper quoting 20 c levels.

（封建首领地位的诸候） a powerful chief of the princes of the Spring and Autumn Period ，hegemon，overlord ；

[例句] 西班牙曾经是海上霸主. Spain once dominated the seas.

[例句] 哦,不错,欢迎我们的新霸主. Awesome ! I for one welcome our new overlords ---- AcoRS.

main channel，main course ；

[例句] 从他们坐的地方就能看见主航道. From where they sat they could get a glimpse of the main stream.

[例句] 暴风雨使货船偏离了主航道. The storm has driven the cargo ship off of its main course.

landlord，landowner，host，laird，landholder；

rich man，moneybags，capitalist ；

[例句] 那些油井的主人是个财主. The owner of the oil wells is a man of substance.

[例句] 赛古安一副财主派头,这是毋容置疑的. Segouin had the unmistakable air of wealth.

doctrine，-ism，creed，ism ；

[例句] 激进的女权主义是时下名嘴阶层热议的话题。 Radical feminism is currently the fashionable topic among the chattering classes.

[例句] 主流女权主义思想倡导女性天生的自然美。 Mainline feminism was arguing for the inherent beauty of the natural woman.

shopkeeper，storekeeper，merchant，shopman，[电影]The Storekeeper；

[例句] 店主们先大量购进，然后再以150英镑的单价将它们转卖出去。 Shopkeepers buy them in bulk and resell them for £150 each.

[例句] 附近的店主在那个男人后面追赶并把他抓住了。 Neighbouring shopkeepers ran after the man and caught him.

（主持会议的人） chairman，president，chairone，chairperson；

[例句] 在18年的美联储主席任期结束时,格林斯潘的年收入为18.01万美元. The former Fed chief made $ 180,100 a year at the end of his 18 - year tenure.

[房] primary beam，main girder，main beam，kingpost，girder ；

[例句] 这片建筑还只是仅有主梁的骨架. The block is still just a skeleton of girders.

[例句] 由火车装运的所有主梁都安放在平板火车车皮上. All girders shipped by rail were arranged on a flatbed rail car.

head of a household [family]，householder，housemaster ；

[例句] 他是户主. He was the head of a household.

[例句] 由于实行高利率和工资冻结措施, 许多户主能做的只是使自己免于负债. With high interest rates and a wages freeze, many householders are only just managing to keep their heads above water.

shipmaster，owner of the vessel，shipowner，exercitor，padrone ；

[例句] “ 我不愿让船主人来叫醒我. " I do not like for him to waken me.

[例句] 霍金斯, 你在船主面前得为我说句公道话. Now, Hawkins, you do me justice with the cap'n.

dereliction ；

[例句] 原始取得包括造物, 占有无主物. Original acquisition comprises making things , taking possession of ownerless things.

[例句] 这儿无主的狗真多 呀 ! What a lot of ownerless dogs there are here!

chief editor，editor in chief，managing editor，chief compiler ；

[例句] 以前我曾经做过大学校报的主编。 I used to edit the college paper in the old days.

[例句] 这本书是由他担任主编出版的. The book was issued under his general editorship.

primary，chief，master，cardinal；

[例句] 书房把主要的生活区与厨房连在一起。 The study links the main living area to the kitchen.

[例句] 两种主要的燃烧产物是水蒸气和二氧化碳。 The two principal combustion products are water vapor and carbon dioxide.

house-owner，[电影]The Householder；

[例句] 现在的房主改建了这座房子。 The house was remodelled by its present owner.

[例句] 当局鼓励房主给住房加隔热装置以节约能源。 Home owners are being encouraged to insulate their homes to save energy.

mainmast，maintopmast ；

[例句] 我向船尾走去,来到了主桅前. I walked aft until I reached the mainmast.

owner ；

[例句] 物主靠压榨农民而赢得暴利。 The owner is making huge profits at the expense of downtrodden peasants.

[例句] 所有毛巾上都标有物主姓名的首字母。 All the towels were personalized with their initials.

staple food，principal food ；

[例句] 稻米是全世界一半以上人口的主食。 Rice is the staple food of more than half the world's population.

[例句] 中国人也把一种面食作为他们的主食之一。 The Chinese also eat a type of pasta as part of their staple diet.

（封建主） feudal lord，suzerain，laird，seignior，thane ；

[例句] 他天生擅长交际：他的祖先曾是封建领主。 Diplomacy was in his blood: his ancestors had been feudal lords.

[例句] 这是权力显赫的波城领主的故居。 It was the home of the powerful lords of Baux.